class_docstr: Lexer for highlighting C# within ASP.NET pages.
code: def analyse_text(text):
      if re.search(r'Page\s*Language="C#"', text, re.I) is not None:
          return 0.2
      elif (
          re.search(r'script[^>]+language=["\']C#', text, re.I)
          is not None
      ):
          return 0.15
  
imports: import re
  from pygments.lexer import RegexLexer, DelegatingLexer, bygroups, include, using, this, default, words
  from pygments.token import Punctuation, Text, Comment, Operator, Keyword, Name, String, Number, Literal, Other
  from pygments.util import get_choice_opt, iteritems
  from pygments import unistring
  from pygments.lexers.html import XmlLexer
label_desc: Use image node_id 2 for calling the CSharpAspxLexer obj's underlying member method code with example usage: obj.analyse_text(text) and returns: int, int